ktvu's noelle walker is live where the mayor told you he thinks there is something bigger going on here. >> reporter: yeah. the mayor told me before the fire here this weekend that this office had the windows broke on out and at his campaign headquarters. >> reporter: when he stood outside his charred law offices he had one thought. >> disbelief. i mean, just doesn't seem real. >> reporter: we talked to him today. >> i am not fearful for my life. i am concerned for my family. i have had written threats. verbal threats. telephone threats but none risen to the level of this dangerous crimical conduct -- criminal conduct. >> reporter: the fire was no accident. >> we have confirmed it was an intentional device that started the fire. >> we believe what happened is arson. >> reporter: being mayor is a good way to make friends and enemies. >> avenue day you are -- every day you are making decisions, haveing a meeting, doing -- having a meeting, doing something that someone isn't going to like. >> reporter: there have been low points, three years ago he made a insensitive mark about gays and ap